Physical description

Black and white photograph of a drawing of anaesthetic equipment, a flowmeter and an ether vaporiser. On the right is the ether vaporiser inside a glass cylinder, with a control tap on top of it. It is attached to a metal cylinder which houses the flowmeter which is measuring the Oxygen and Nitrous Oxide. There is a round Oxygen control and a Nitrous Oxide control attached underneath the metal cylinder, as well as an Oxygen Bypass and a Nitrous Oxide Bypass. The diagram has each part of the apparatus named with an arrow pointing to the parts.